BX120-3AA High Precision Foil Strain Gauge – 120 Ohm Sensor- Pack of 4 Pcs

The BX120-3AA High Precision Resistance Strain Gauge is an essential component for engineers and hobbyists looking to build custom weighing sensors, pressure transducers, or structural monitoring systems. This is a foil metal strain gauge designed to measure minute deformations in materials.

Precision Sensing

When glued to a surface (like a metal beam), this gauge stretches or compresses with the material, changing its electrical resistance. This change is measured using a Wheatstone Bridge circuit to calculate force or weight with high accuracy. The BX120-3AA is manufactured to a 0.02 precision level, making it suitable for creating professional-grade load cells.

Robust & Stable

Featuring a high sensitivity coefficient of 2.1, this gauge provides clear signal changes for minimal strain. It is widely used for measuring the static or dynamic strain of mechanical components, analyzing stress distribution, and building electronic scales.

Key Features

• High Accuracy: Manufactured for precision sensing with a 0.02 strain limit.

• Foil Technology: Metal foil construction ensures excellent stability and linearity.

• Versatile Application: Ideal for creating full-bridge, half-bridge, or quarter-bridge pressure and weight sensors.

• Direct Measurement: Can be applied directly to components to measure mechanical strain.

   

Technical Specifications

Typical Application Scenarios

• DIY Load Cells: Building custom digital scales.

• Structural Analysis: Measuring stress on bridges, beams, or aircraft parts.

• Pressure Sensors: Creating custom diaphragm pressure sensors.

• Robotics: Tactile sensors for robot grippers.

Package Includes

• 4 x BX120-3AA High Precision Resistance Strain Gauge

Important Product Disclaimer

Please note that the product information provided on our website may not be entirely accurate as it is collected from various sources on the web. While we strive to provide the most up-to-date information possible, we cannot guarantee its accuracy. We recommend that you always read the product labels, warnings, and directions before using any product. Product images are shown for illustrative purposes only and may differ from the actual product.

Note

Installation Tip: These gauges are delicate. They must be glued to the test surface using a specialized cyanoacrylate adhesive (super glue) and require a dedicated strain gauge amplifier (like the HX711) to read the tiny resistance changes effectively.